photoperiodicity meaning in Hindi

Examples

1. When Wehr began studying photoperiodicity in humans, he was astonished to learn how little work had been done in the area.
2. Tobacco, onions, garlic and vegetables are grown during the dry season ( November to May ) since they are not water-intensive crops, and require longer photoperiodicity.
3. In a 1990s study on photoperiodicity in humans, Wehr placed a group of volunteers in an environment in which it was dark for 14 hours each day for a month.
4. Maize is a Photoperiodicity can be eccentric in tropical cultivars such that the long days characteristic of higher latitudes allow the plants to grow so tall that they do not have enough time to produce seed before being killed by frost.
5. The surprising new finding is part of a larger study that Wehr and his colleagues are carrying out in the relatively unmined field of photoperiodicity in humans-- the impact of day length on hormonal fluxes, sleep patterns and behavior.